Humans are a threat to elephants. They live in herds and mostly live on animal preserves today. Elephants are hunted for their skin and tusks, as well as their meat. Humans are also responsible for elephants losing their land. They don't have enough room to live.
Lions live and hunt in groups. Nearly all wild lions live in sub-Saharan Africa, but one small population of Asiatic lions exists in India's Gir Forest. They also exist in zoos and animal preserves today, so they are not as in danger as other animals, but still suffer loss from hunters.
There are different types of zebras. They live in packs to help protect them, since it's harder to see just one of them. Being hunted is their problem. Grevy's zebras are losing their land to farmers who use their land for their cows and who drain water from the land to use on their farms.
The three-toed sloth is in danger because its forest habitat is being torn down for the wood, cleared for farm land, or burned for charcoal.
Blue macaws are endagered because they are losing their habitat because their trees are being cut down. They are also caught and sold as pets.
Sea turtles face lots of dangers. They live in the water, but they lay their eggs on the beach. Their eggs and new born baby turtles face lots of dangers including their eggs being hunted, but there are some people who work to protect the nests. In the water the turtles face dangers from boats, pollution, as well as from hunters who want their shells and meat.